netdev - Re: [PATCH] [net-next?] of: add of_property_read_variable

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Date:   Mon, 6 Nov 2017 08:31:52 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        "David S . Miller" <davem@...emloft.net>,
        Frank Rowand <frowand.list@...il.com>,
        netdev <netdev@...r.kernel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Grant Likely <grant.likely@...retlab.ca>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [net-next?] of: add of_property_read_variable_* dummy helpers

On Mon, Nov 6, 2017 at 7:26 AM, Arnd Bergmann <arnd@...db.de> wrote:
> Commit a67e9472da42 ("of: Add array read functions with min/max size
> limits") added a new interface for reading variable-length arrays from
> DT properties. One user was added in dsa recently and this causes a
> build error because that code can be built with CONFIG_OF disabled:
>
> net/dsa/dsa2.c: In function 'dsa_switch_parse_member_of':
> net/dsa/dsa2.c:678:7: error: implicit declaration of function 'of_property_read_variable_u32_array'; did you mean 'of_property_read_u32_array'? [-Werror=implicit-function-declaration]
>
> This adds a dummy functions for of_property_read_variable_u32_array()
> and a few others that had been missing here. I decided to move
> of_property_read_string() and of_property_read_string_helper() in the
> process to make it easier to compare the two sets of function prototypes
> to make sure they match.
>
> Fixes: 975e6e32215e ("net: dsa: rework switch parsing")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> DT maintainers: there is currently a build break in the net-next tree
> (from branch "dsa-parsing-stage") because of this, I think the best
> way forward would be to get an Ack for this patch to get picked up
> through the netdev trees.

Fine by me.

> ---
>  include/linux/of.h | 62 +++++++++++++++++++++++++++++++++++++++++++-----------
>  1 file changed, 50 insertions(+), 12 deletions(-)

Acked-by: Rob Herring <robh@...nel.org>